2/24 · macroscopic cross-section Sources: Orange Book, 2 nd ed., p. 217 [ Terms ] [ Book ] PAC, 1994, 66 , 2513. ( Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994) ) on page 2517 [ Terms ] [ Paper ]

the sum of the products of isotope number densities and microscopic cross sections. A notable exception is the mixture of the neutron fission spectrum in 

The microscopic cross-section represents the effective target area of a single target nucleus for an incident particle. The units are given in barns or cm2. While the macroscopic cross-section represents the effective target area of all of the nuclei contained in the volume of the material, the units are given in cm-1.

While the macroscopic cross-section represents the effective target area of all of the nuclei contained in the volume of the material. The units are given in cm-1. A macroscopic cross

10/14 · Well, the relationship between macroscopic cross section Sigma (cm^-1) and microscopic cross section sigma (cm^2) is a basic concept introduced in physics books: sigma = A Sigma / (rho N_A), where A is the molar mass (g/mol), N_A is the Avogadro constant (mol^-1), and rho is the material density (g/cm^3).

233U. 233 U belongs to the group of fissile isotopes. It is produced by radiative neutron capture in nuclear reactors containing thorium fuel. 2. 236U. 236 U is neither a fissile isotope nor a fertile isotope. 236 U is fissionable only by fast neutrons. Isotope 236 U is formed in a nuclear reactor from fissile isotope 235 U.

Quantifying radiation damage can be done by analyzing the neutron microscopic and macroscopic cross sections of the materials. The cross sections express the likelihood of an interaction between

The standard unit for measuring the cross section is the barn, which is equal to 10−28 m2 or 10−24 cm2. The 

microscopic fission, scattering and absorption cross- section. Neutron attenuation is a term used to describe the.

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He explains: “A microscopic cross section looks like brickwork, with flat, hexagonal tablets of a crystalline, calcium carbonate mineral stacked in neat layers. jw The distinction between macroscopic and microscopic cross - section is that the former is a property of a specific lump of material (with its density), while the latter is an intrinsic property of a type of nuclei.